/* ================================
   INbook Modern Design System 2024
   ================================ */

/* Zmienne dla nowoczesnego designu */
:root {
    /* Kolory główne */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #13f1fc 0%, #0470dc 100%);
    --gradient-danger: linear-gradient(135deg, #f53844 0%, #42047e 100%);
    --gradient-warning: linear-gradient(135deg, #f9d423 0%, #ff4e50 100%);
    --gradient-info: linear-gradient(135deg, #00d2ff 0%, #3a47d5 100%);
    
    /* Neon colors */
    --neon-pink: #ff006e;
    --neon-blue: #00f5ff;
    --neon-green: #00ff88;
    --neon-purple: #8b00ff;
    --neon-yellow: #ffea00;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --glass-blur: blur(20px);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);
    
    /* Animacje */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
}

/* Dark theme variables */
[data-theme="dark"] {
    --glass-bg: rgba(0, 0, 0, 0.3);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* ================================
   Animacje i Keyframes
   ================================ */

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(102, 126, 234, 0.4); }
    50% { box-shadow: 0 0 40px rgba(102, 126, 234, 0.8); }
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slide-in-right {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce-in {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes neon-glow {
    0%, 100% {
        text-shadow: 
            0 0 10px var(--neon-blue),
            0 0 20px var(--neon-blue),
            0 0 30px var(--neon-blue);
    }
    50% {
        text-shadow: 
            0 0 20px var(--neon-blue),
            0 0 30px var(--neon-blue),
            0 0 40px var(--neon-blue);
    }
}

/* ================================
   Glassmorphism Components
   ================================ */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

.glass-button {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    padding: 12px 24px;
    font-weight: 600;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow);
}

.glass-button:hover::before {
    left: 100%;
}

/* ================================
   Modern Navigation
   ================================ */

.modern-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-base);
}

[data-theme="dark"] .modern-navbar {
    background: rgba(0, 0, 0, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modern-navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-lg);
}

/* ================================
   Modern Cards
   ================================ */

.modern-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
}

[data-theme="dark"] .modern-card {
    background: var(--card-background);
}

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.modern-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.card-3d {
    transform-style: preserve-3d;
    transition: transform var(--transition-base);
}

.card-3d:hover {
    transform: rotateY(10deg) rotateX(10deg);
}

/* ================================
   Modern Buttons
   ================================ */

.btn-modern {
    position: relative;
    padding: 12px 32px;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    transition: all var(--transition-base);
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
}

.btn-neon {
    background: transparent;
    color: var(--neon-blue);
    border: 2px solid var(--neon-blue);
    box-shadow: 
        0 0 10px var(--neon-blue),
        inset 0 0 10px rgba(0, 245, 255, 0.1);
    transition: all var(--transition-base);
}

.btn-neon:hover {
    background: var(--neon-blue);
    color: white;
    box-shadow: 
        0 0 20px var(--neon-blue),
        0 0 40px var(--neon-blue),
        inset 0 0 20px rgba(0, 245, 255, 0.2);
    transform: translateY(-2px);
}

.btn-morph {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50px;
    padding: 15px 30px;
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 15px 0 rgba(102, 126, 234, 0.4);
    transition: all var(--transition-spring);
}

.btn-morph:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px 0 rgba(102, 126, 234, 0.6);
}

.btn-morph:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 10px 0 rgba(102, 126, 234, 0.4);
}

/* ================================
   Floating Action Button
   ================================ */

.fab-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.fab {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-xl);
    cursor: pointer;
    transition: all var(--transition-spring);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-2xl);
}

.fab-menu {
    position: absolute;
    bottom: 80px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.fab-menu.active {
    opacity: 1;
    visibility: visible;
}

.fab-menu-item {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: white;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-spring);
    animation: bounce-in 0.4s ease-out;
}

.fab-menu-item:hover {
    transform: scale(1.15);
    box-shadow: var(--shadow-xl);
}

/* ================================
   Modern Forms
   ================================ */

.form-modern {
    position: relative;
}

.form-floating {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-floating input,
.form-floating textarea {
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-color);
    border-radius: 0;
    padding: 1.5rem 0 0.5rem 0;
    font-size: 1rem;
    transition: all var(--transition-base);
    width: 100%;
}

.form-floating label {
    position: absolute;
    top: 1rem;
    left: 0;
    font-size: 1rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: all var(--transition-base);
}

.form-floating input:focus,
.form-floating input:not(:placeholder-shown),
.form-floating textarea:focus,
.form-floating textarea:not(:placeholder-shown) {
    border-bottom-color: var(--primary-color);
}

.form-floating input:focus ~ label,
.form-floating input:not(:placeholder-shown) ~ label,
.form-floating textarea:focus ~ label,
.form-floating textarea:not(:placeholder-shown) ~ label {
    top: 0;
    font-size: 0.75rem;
    color: var(--primary-color);
}

/* ================================
   Modern Stories
   ================================ */

.stories-modern {
    display: flex;
    gap: 15px;
    padding: 20px 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.stories-modern::-webkit-scrollbar {
    display: none;
}

.story-modern {
    position: relative;
    min-width: 110px;
    height: 190px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--gradient-primary);
}

.story-modern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.7) 100%);
    z-index: 1;
}

.story-modern:hover {
    transform: scale(1.05);
}

.story-modern.add-story {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 2px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.story-modern .story-avatar {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid var(--neon-pink);
    z-index: 2;
}

.story-modern .story-username {
    position: absolute;
    bottom: 10px;
    left: 10px;
    right: 10px;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    z-index: 2;
}

/* ================================
   Modern Posts
   ================================ */

.post-modern {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    animation: slide-up 0.4s ease-out;
}

[data-theme="dark"] .post-modern {
    background: var(--card-background);
}

.post-modern-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.post-author-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.post-author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                var(--gradient-primary) border-box;
}

.post-modern-content {
    padding: 0 1.5rem 1rem;
}

.post-modern-media {
    position: relative;
    overflow: hidden;
    max-height: 600px;
}

.post-modern-media img,
.post-modern-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-modern-actions {
    padding: 1rem 1.5rem;
    display: flex;
    gap: 2rem;
    border-top: 1px solid var(--border-color);
}

.post-action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 1rem;
    position: relative;
}

.post-action-btn:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.post-action-btn.liked {
    color: var(--neon-pink);
    animation: bounce-in 0.3s ease-out;
}

/* ================================
   Reaction System
   ================================ */

.reaction-picker {
    position: absolute;
    bottom: 100%;
    left: 0;
    background: white;
    border-radius: var(--radius-full);
    padding: 0.5rem;
    box-shadow: var(--shadow-xl);
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8) translateY(10px);
    transition: all var(--transition-base);
}

[data-theme="dark"] .reaction-picker {
    background: var(--card-background);
}

.reaction-picker.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

.reaction-emoji {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: all var(--transition-base);
}

.reaction-emoji:hover {
    transform: scale(1.3);
    background: var(--glass-bg);
}

/* ================================
   Modern Chat
   ================================ */

.chat-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 380px;
    height: 500px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 998;
    transform: scale(0);
    transform-origin: bottom right;
    transition: all var(--transition-spring);
}

[data-theme="dark"] .chat-widget {
    background: var(--card-background);
}

.chat-widget.active {
    transform: scale(1);
}

.chat-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-message {
    max-width: 70%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    animation: slide-up 0.3s ease-out;
}

.chat-message.sent {
    align-self: flex-end;
    background: var(--gradient-primary);
    color: white;
    border-bottom-right-radius: 0;
}

.chat-message.received {
    align-self: flex-start;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom-left-radius: 0;
}

.chat-input {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.5rem;
}

.chat-input input {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: var(--input-background);
    border-radius: var(--radius-full);
    outline: none;
}

.chat-input button {
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.chat-input button:hover {
    transform: scale(1.05);
}

/* ================================
   Skeleton Loading
   ================================ */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--glass-bg) 25%,
        rgba(255, 255, 255, 0.3) 50%,
        var(--glass-bg) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.skeleton-card {
    height: 200px;
    border-radius: var(--radius-xl);
}

/* ================================
   Modern Notifications
   ================================ */

.notification-modern {
    position: fixed;
    top: 100px;
    right: 30px;
    min-width: 350px;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slide-in-right 0.3s ease-out;
    z-index: 1001;
}

[data-theme="dark"] .notification-modern {
    background: var(--card-background);
}

.notification-modern::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.notification-modern.success::before {
    background: var(--gradient-success);
}

.notification-modern.error::before {
    background: var(--gradient-danger);
}

.notification-modern.warning::before {
    background: var(--gradient-warning);
}

/* ================================
   Modern Tooltips
   ================================ */

.tooltip-modern {
    position: relative;
    display: inline-block;
}

.tooltip-modern::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    pointer-events: none;
}

.tooltip-modern:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: 135%;
}

/* ================================
   Modern Badges
   ================================ */

.badge-modern {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--gradient-primary);
    color: white;
    animation: bounce-in 0.3s ease-out;
}

.badge-glow {
    box-shadow: 0 0 10px currentColor;
    animation: pulse-glow 2s infinite;
}

/* ================================
   Modern Tabs
   ================================ */

.tabs-modern {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.tab-modern {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: all var(--transition-base);
}

.tab-modern::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tab-modern:hover {
    color: var(--text-color);
}

.tab-modern.active {
    color: var(--primary-color);
}

.tab-modern.active::after {
    transform: scaleX(1);
}

/* ================================
   Modern Progress
   ================================ */

.progress-modern {
    height: 8px;
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-bar-modern {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    position: relative;
}

.progress-bar-modern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

/* ================================
   Modern Modal
   ================================ */

.modal-modern {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1002;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-modern.active {
    opacity: 1;
    visibility: visible;
}

.modal-modern-content {
    background: white;
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    animation: bounce-in 0.4s ease-out;
}

[data-theme="dark"] .modal-modern-content {
    background: var(--card-background);
}

/* ================================
   Responsive Design
   ================================ */

@media (max-width: 768px) {
    .chat-widget {
        width: 100%;
        height: 100%;
        bottom: 0;
        right: 0;
        border-radius: 0;
    }
    
    .notification-modern {
        right: 10px;
        left: 10px;
        min-width: auto;
    }
    
    .stories-modern {
        padding: 10px 0;
    }
    
    .story-modern {
        min-width: 80px;
        height: 140px;
    }
}

/* ================================
   Utility Classes
   ================================ */

.animate-in {
    animation: slide-up 0.4s ease-out;
}

.fade-in {
    animation: fade-in 0.3s ease-out;
}

.bounce {
    animation: bounce-in 0.5s ease-out;
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blur-bg {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.shadow-neon {
    box-shadow: 
        0 0 20px var(--neon-blue),
        0 0 40px var(--neon-blue);
}